Android 学习笔记（六）：ContextMenu上下文菜单

ContextMenu上下文菜单，和电脑上单击鼠标右键出现的快捷菜单等同，即安卓中长按某项（2秒左右）出现的快捷菜单，

ContextMenu上下文菜单创建方法：

1.重写Activity的onCreateContextMenu()方法，调用Menu的add方法添加菜单项
2.重写onContextItemSelected()方法，响应菜单单击事件
3.调用registerForContexMenu()注册上下文菜单

main.xml

[html] <?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">
        <ListView android:id="@+id/listView"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"/>
</RelativeLayout>
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">
        <ListView android:id="@+id/listView"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"/>
</RelativeLayout>TestActivity.java

[java] public class TestActivity extends Activity {
    ListView listView;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        listView=(ListView)findViewById(R.id.listView);
        //为listView注册上下文菜单ContextMenu
        //方法1
        this.registerForContextMenu(listView);
        //方法2
        //listView.setOnCreateContextMenuListener(this);
        String [] s={"特凡·萨尔瓦托 Stefan Salvatore",
                "艾琳娜·吉尔伯特 Elena Gilbert",
                "达蒙·萨尔瓦托 Damon Salvatore",
                "杰里米·吉尔伯特 Jeremy Gilbert",
                "卡罗琳·福布斯 Caroline Forbes"};
        ArrayAdapter aa=new ArrayAdapter<String>(this,android.R.layout.易做图_list_item_1,s);
        listView.setAdapter(aa);
    }

    //创建上下文菜单
    @Override
    public void onCreateContextMenu(ContextMenu menu, View v,ContextMenuInfo mi) {
        menu.setHeaderTitle("你猜啊~ 0,0");
        //配置上下文菜单选项
        menu.add(0, Menu.FIRST +1, 1, "海贼王");
        menu.add(0, Menu.FIRST +2, 2, "暮光之城");
        menu.add(0, Menu.FIRST +3, 3, "吸血鬼日记");
        menu.add(0, Menu.FIRST +4, 4, "齐天大圣");
        //super.onCreateContextMenu(menu, v, mi);
    }
    //响应上下文菜单的点击事件
    @Override
    public boolean onContextItemSelected(MenuItem item) {
        if(item.getItemId()==Menu.FIRST + 3){
            Toast.makeText(this, "ORZ,你聪明易做图啦！", Toast.LENGTH_SHORT).show();
        }else{
            Toast.makeText(this, "这有个毛联系！", Toast.LENGTH_SHORT).show();
        }
        return super.onContextItemSelected(item);
    }
}
public class TestActivity extends Activity {
ListView listView;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        listView=(ListView)findViewById(R.id.listView);
        //为listView注册上下文菜单ContextMenu
        //方法1
        this.registerForContextMenu(listView);
        //方法2
        //listView.setOnCreateContextMenuListener(this);
        String [] s={"特凡·萨尔瓦托 Stefan Salvatore",
          "艾琳娜·吉尔伯特 Elena Gilbert",
          "达蒙·萨尔瓦托 Damon Salvatore",
          "杰里米·吉尔伯特 Jeremy Gilbert",
          "卡罗琳·福布斯 Caroline Forbes"};
        ArrayAdapter aa=new ArrayAdapter<String>(this,android.R.layout.易做图_list_item_1,s);
        listView.setAdapter(aa);
    }

    //创建上下文菜单 www.zzzyk.com
    @Override
    public void onCreateContextMenu(ContextMenu menu, View v,ContextMenuInfo mi) {
        menu.setHeaderTitle("你猜啊~ 0,0");
        //配置上下文菜单选项
        menu.add(0, Menu.FIRST +1, 1, "海贼王");
        menu.add(0, Menu.FIRST +2, 2, "暮光之城");
        menu.add(0, Menu.FIRST +3, 3, "吸血鬼日记");
     &n

补充：移动开发 , Android ,